movie frame of Chris Evans and Chris Hemsworth in Marvel Avengers: Age of Ultron

Watch a New Marvel’s Avengers: Age of Ultron Teaser Trailer

When Tony Stark jumpstarts a dormant peacekeeping program, things go awry and Earth’s Mightiest Heroes, including Iron Man, Captain America, Thor, The Incredible Hulk, Black Widow and Hawkeye, are put to the ultimate test as they battle to save the planet from destruction at the hands of the villainous Ultron.

Marvel’s Avengers: Age of Ultron hits U.S. theaters May 1, 2015.